What was mexicos religion in the 1940s?

In the 1940s, the predominant religion in Mexico was Roman Catholicism. Catholicism had been introduced to Mexico by Spanish conquistadors in the 16th century and had become the official religion of the country. According to the 1940 Mexican census, 97.4% of the population identified as Roman Catholic. Other religions practiced in Mexico during this time included Protestantism, Judaism, and various indigenous religions.